Slide tray positioning apparatus for a projecting apparatus



3,349,510 SLIDE TRAY POSITIONING APPARATUS FOR A PROJECTING APPARATUS Filed Aug. 16, 1965 R. D. KLUGE Oct. 31; 1967 18 Sheets-Sheet 1 INVENTOR. ROBERT KLUGE Oct. 31, 1967 R. D. KLUGE 3,349,510

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R. D. KLUGE Oct. 31, 1967 I SLIDE TRAY POSITIONING APPARATUS FOR A PROJECTING APPARATUS Filed Aug. 16, 1965 I8 Sheets-Sheet 18 o o I LwiflL wmw mmm mmm 1m A H V mun @x mm 1%? +4 I G wmw vmw g fi mum vmw new 9 mkw n MN .Q m Qmw United States Patent Office 3,349,510 Patented Oct. 31, 1967 3,349,510 SLH)E TRAY POSITIONING APPARATUS FOR A PROJECTING APPARATUS Robert D. Kluge, Westminster, Colo., assignor to Honeywell Inc., Minneapolis, Minn., a corporation of Delaware Filed Aug. 16, 1965, Ser. No. 480,032 Claims. (Cl. 40-79) The present invention relates to a photographic slide tray projector.

It is one of the objects of the present invention to disclose a leveling device for raising and lowering the image projecting end of the projector which will considerably reduce the time that has heretofore been required when commercially-available jack screw leveling devices or articles such as stacked books are called upon to accomplish this projector leveling feat.

More specifically, it is an object of the present invention to disclose a built-in push-button actuating leveling device for the aforementioned projector that will allow a pair of spaced-apart projector supported legs to be extended through one end of its base against a level or a non-level object on which it is to be positioned to show slides and to also allow the front end of the projector to be pivoted 'On and about a centrally located stationary back leg to a desired picture projecting angle when the push-button position of the leveling device is depressed and which will thereafter support the projector in the desired picture projecting position when a push-button is released.

It is another object of the invention to provide a first manually operated quick release push-button actuated switch for allowing an operator to show each slide in the tray that is associated within a projector in immediate consecutive order as the slides in the tray are advanced in a forward direction.

It is a more specific object of the present invention to disclose a first push-button operated switch of the aforementioned type which need only be manually held in a closed position by the operator for an instant of time and then immediately released because it is electrically connected to cause a solenoid actuating clutch to be energized and the previously-mentioned single split phase motor to thereby rotate a lobe that is integrally mounted on the circumferential surface of a slide lifting cam unit in a forward slide showing direction into physical contacting engagement with a second switch so that the solenoid energizing and the resulting slide lifting function performed by the motor will be continued when the release of the first switch takes place.

It is another object of the present invention to provide another manually operated quick release push-button actuated switch for allowing an operator to show each slide in the tray that is associated with the aforementioned projector in a reverse manner from that previously referred to.

It is a more specific object of the present invention to disclose a second push-button operated switch of the lastmentioned type which need only be manually held in a closed position by the operator for an instant of time and then immediately released because it is electrically connected to cause a solenoid actuating clutch to be energized and the previously-mentioned single split phase motor to thereby rotate a lobe that is integrally mounted on the circumferential surface of a slide lifting cam unit in a reverse slide showing direction into physical contacting engagement with another switch so that the solenoid energizing and slide lifting functions performed by the motor will be continued when the release of the firstmentioned push-button switch takes place.

It is another object of the present invention to provide a locking mechanism having a tooth-engaging portion that is purposely slidably mounted in a stationary projector part that is used to sequentially guide each slide between its in-tray position and its projecting position to enable the tooth to be moved into engagement between two adjacent teeth on the tray and thereby automatically force the slide into its correctly aligned position with the guide before the slide is allowed to be projected from the tray by way of the guide to its projecting position.

A better understanding of the present invention may be had from the following detailed description when read in connection with the accompanying drawings in which:

FIGURE 1 shows a prospective view of the projector;

FIGURE 2 is a top view of the projector;

FIGURE 3 is a left side view of the projector;

FIGURE 4 is a back view of of the projector;

FIGURE 5 shows in detail a front view of a circular tray that is retained within the aforementioned projector,

FIGURE 6 is a back view of the tray;

FIGURE 7 is a side view of the tray;

'FIGURE 8 is a section taken along the line 88 of FIGURE 6 with the top front plate removed;

FIGURE 9 shows a front view of the projector with its back plate removed;

FIGURE 10 shows a rear view of the projector;

FIGURE 11 shows a vertical section taken along section line 1111 of FIGURE 9;

FIGURE 12 is a section view taken along the line 1212 of FIGURE 10;

FIGURE 13 is a view partially in section taken along the line 13-13 of FIGURE 10;

FIGURE 14 is a view showing the projector lens and how its associated cam-actuated lens carrier can move the lens from one position to another;

FIGURE 15 is a View along line 15-15 of FIGURE 14 showing the right end view of the lens carrier;

FIGURE 16 is a view of the main and secondary cams shown in FIGURES '12 and 13;

FIGURE 17 shows the positions of the slide-lifting drive bar and shutter as this cam-driven, magnet-carrying drive bar is starting to move the slide in an upward position from the tray;

' FIGURE 18 shows the show position of the slide lifting drive bar and shutter as the aforementioned camdriven, magnet-carrying drive bar has moved the slide into an in-gate slide projecting position;

FIGURE 19 shows the position of the slide-lifting drive bar and shutter as this cam-driven, magnet-carrying drive FIGURE 21 shows a top plan view of the slide guides as taken along the line 2121 of FIGURE 11 and how a movable permanent magnet, such as is shown in FIG- URES 16 and 25, is attached to a slide;

FIGURE 22 shows how a damping device can be connected to the solenoid actuator shown in FIGURES l and 13;

FIGURE 23 shows a right end view of FIGURE 22;

FIGURE 24 shows an up or show slide position of the index lock cam and its associated linkage;

FIGURE 25 shows the lock cam of FIGURE 24 rotated counter-clockwise to a position in which no editing of the slides can take place;

FIGURE 26 shows the drive bar at its lowermost position and its lug thereof as having rotated the interlock cam further in a counter-clockwise direction;

FIGURE 27 is a circuit diagram showing the relationship that exists between all of the electrical components disclosed in FIGURES 9, 10, 13 and 16.

The rotary slide projector shown in FIGURES 1-4 of the drawing is comprised of a front half casing portion 12 and a rear half casing portion 14. The front half casing portion 12 has a ring-shaped wall 16 extending inwardly from a lower front surface 18 thereof for retaining a rotary slide tray 20 therein. The upper part 22 and the top part 24 of the front casing portion 12 is of a separate angular single part construction and has a wall 26 forming an opening therein to accommodate the sliding of the slide editing gate 28 therethrough.

The right side 30 of the front half casing portion 12 of the projector 10 is shown having a projecting lens 32 extending theret-hrough. The entire base part 34 of the front half casing portion 12 is shown tapered in an upward and outward direction between the part that contacts the rear half casing portion 14 and the portion of the base that contacts the lower front surface 18.

The entire base part 36 of the rear casing portion 14 is also shown tapered in an upward and outward direction between the part that contacts the front half casing portion 12 and the portion of the rear end of the base part 36 that contacts the lower end of the back surface 38 of the rear half casing portion 14.

The upper left side of the projector 10 is formed by two contacting wall portions 40, 42 that form respective parts of the front and rear half casing portions 12 and 14. The lower left side of the projector 10 is formed of a single slidable door plate portion 44 having a handle 46 thereon that can be moved in an upward vertical direction to a position that is immediately behind its contacting wall portions 40, 42. This door 44 provides access to a compartment (not shown) that contains a slide tray loading switch, a slide showing switch and a switch for either showing the slides in tray in immediate consecutive forward manner, a switch for showing the slides in the tray in a reverse sequence and an electrical power plug-in wire connection which is necessary to supply an electrical current to the projector 10.

The upper right and left side wall portions 42, 48 of the rear half casing portion 14 of the projector 10 have portions that are integral therewith which extend upwardly therefrom to form a projector handle 50.

A push button 52 extends through an aperture 54 in the top surface of the rear half casing portion 14 of the projector 10 to move a linkage hereinafter described which will adjust the position of two legs 54, 56 against a level or non-level surface on which the projector 10 is placed.

These legs 54, 56 are shown extending through the respective tapered base parts 34, 36 of the front and rear half casing portions 12 and 14 while the projector 10 is pivoted about stationary resilient foot 58 that is shown in FIGURE 3. The tapered base parts will thus enable the projector to be placed in a position in which the front half of the casing portion is upward and spaced away from a non-level support surface or vice versa.

Rotary slide tray The previously-mentioned rotary slide tray 20 shown in FIGURES 1 and 5-8 is comprised of two spaced-apart circumferential side ring and disc portions 62, 64 that are of different diameters and that are integrally joined together at their central portion by means of a hub 66.

A series of substantially equally spaced apart radially oriented spacer plates 68, 70, 72, 74 are also joined together in an integral manner with the outer circumferential side ring and disc portions 62, 64. These spacer plates 68-74 are purposely positioned adjacent the circumferential ring and disc portions 62, 64 of the tray 20 in order to allow the inner end of the slides, for example the slides 76, 78, and 82 shown in FIGURE 1 that are to be dropped from a position that is located outwardly from the peripheral portion of the tray into a load position so that their inner ends are in contact with the hub 66 and brought into extremely close proximity with one another.

It can thus be seen from FIGURE 1 that such a tray construction will enable many more slides to be mounted in a much smaller tray than has heretofore been possible when other types of commercially-available trays are used.

It can also be seen by observing in FIGURE 1 that since the spacer plates, for example 68, 74, are positioned between spaced-apart side ring and disc portions 62, 64 of the tray 20 that are purposely made of considerably different diameters, the slides can, therefore, be readily inserted and removed from the tray 20 in a substantially frictionless manner. Such a tray construction, therefore, considerably reduces the frictional slide spacer rubbing effect that has heretofore been encountered with trays that have side ring portions that are of the same diameter.

The rotary slide tray 20 is also provided with a bendable transparent cup-shaped slide selecting indexing lid 84. The indexing lid 84 has a wall 86 forming an aperture in its central portion to enable the slide indexing tray 20 to be rotated about its outer hub portion 66.

An inner surface adjacent the outer circumferential part of the lid 84 is provided with three pair of arc-shaped lug portions 88, 90; 92, 94; and 96, 98 which protrude from the inner side wall and the inner base surface of the cupshaped lid 84. The lug portions 88-98 are located in a position with respect to the ring portion 62 that allows the lid to be snapped into a slide retaining position on the ring portion 62. These lug portions 88-98 also provide guiding surfaces along which the lid 84 can rotatably slide along the tray portion 62 when a slide indexing operation takes place.

The indexing lid 84 also has a circular flange portion 100 and a rectangular protuberance 102 that extends in an outward direction therefrom that acts as a removable twelve oclock indexing key when inserted into the slide 104 of the projector 10 that is shown in FIGURE 1 of the drawing.This protuberance 102 contains two spacedapart wall portions 106, 108 that form a slot therein. The slot formed by the walls 106, 108 provides the only passageway in the lid 84 through which a slide in the tray 20 can be removed when the lid has been snapped onto the left side of the tray 20.

The lid also contains a raised magnifying portion 110 which can be aligned with any one of the slide identifying embossed numbers, for example 62, that are formed on the fiat ring portion 62 of the tray 20.

A part of the space between these spacer plates 112, 114 identified as 00 on the tray is shown filled in at 116 so that no slide can be inserted therein or removed from the tray 20 when the tray is not being used and the side wall portions 106, 108 have been brought into side alignment with 00.

The entire front outermost peripheral surface 120 of the outer hub portions 66 of the tray 20 is shown containing a series of grooves 122 to form a hand grip by which 

1. A SLIDE ADVANCING APPARATUS FOR A PROJECTOR COMPRISING, A MOTOR, AN AUTOMOTICALLY OPERATED SWITCHING MEANS CONNECTED TO THE MOTOR TO INTERMITTENTLY DRIVE THE MOTOR, A GEAR REDUCTION UNIT AND A SINGLE TOOTH GEAR CONNECTED FOR ROTATION WITH THE MOTOR IN A PRESCRIBED DIRECTION FOR A PRESELECTED PERIOD OF TIME, A TRAY MOUNTED FOR ROTATION WITHIN THE PROJECTOR CONTAINING SLIDES RADIALLY POSITIONED THEREIN, GEAR TEETH FORMED ALONG AN OUTER RING PORTION OF THE TRAY, A ROTATABLY MOUNTED PINION IN DRIVING ENGAGEMENT WITH THE TEETH ON THE TRAY, THE TOOTH ON THE SINGLE TOOTH GEAR BEING POSITIONED TO BE BROUGHT INTO DRIVING ENGAGEMENT BETWEEN TWO OF THE TEETH ON THE PINION TO ROTATABLY MOVE THE PINION, TRAY AND THE SLIDES RADIALLY POSITIONED THEREIN THROUGH A PRESELECTED ANGLE OF ROTATION SO THAT EACH SLIDE CAN BE SEQUENTIALLY MOVED TO A TWELVE O''CLOCK POSITION IN THE TRAY, A GATE POSITIONED ABOVE THE TRAY, A GUIDE CASING TO PROVIDE A PASSAGEWAY FOR MOVING A SLIDE BETWEEN THE TRAY AND THE GATE POSITIONED AT A 12 O''CLOCK LOCATION BETWEEN THE TRAY AND THE GATE, A HOOK POSITIONED FOR SLIDING ENGAGEMENT IN THE GUIDE CASING, A BIASING MEANS POSITIONED IN THE GUIDE CASING TO RETAIN THE HOOK IN ENGAGEMENT BETWEEN TWO ADJACENT GEAR TEETH FORMED ON SAID OUTER RIM PORTION OF THE TRAY, A HOOK LIFTING MEANS OPERABLY CONNECTED FOR MOVEMENT WITH THE MOTOR TO LIFT THE HOOK OUT OF ENGAGEMENT WITH THE SAID ADJACENT TEETH AGAINST THE BIASING MEANS WHEN A SLIDE CHANGING OPERATION IS EFFECTED AND SAID HOOK LIFTING MEANS BEING FURTHER OPERABLE TO RELEASE THE BIASING MEANS AND BRING THE HOOK INTO ENGAGEMENT BETWEEN ADJACENT GEAR TEETH ON THE TRAY IMMEDIATELY AFTER A SLIDE CHANGING OPERATION BETWEEN THE TRAY AND THE GATE HAS BEEN EFFECTED. 